The invention provides a process for preparing gas-phase white carbon black at a low temperature and recycling metal by taking industrial waste residues containing silicate as raw materials. In the process, wastes including the industrial waste residues and the like are used as the raw materials and are reacted with fluorine-containing acid liquid, hydrochloric acid and nitric acid to prepare the product gas-phase white carbon black with a high additional value and the metal is recycled; in the prepared product, the content of SiO2 is more than 99.9 percent and the specific surface area measured by a multi-point BET method is: 350m<2>/g to 500m<2>/g, so that the effect of changing wastes into valuable things is realized; after acidic gas generated in the preparation process is absorbed by a negative-pressure water absorption tank, corresponding acid liquid can be prepared; when the acid liquid is concentrated to a certain concentration, the acid liquid can be circularly utilized. Meanwhile, the invention further provides a production device used for the process; all parts of the production device are common devices in chemical plants and the cost is low, so that large-scale industrial production can be realized.